1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2012 The Bitcoin Developers
3 // Distributed under the MIT/X11 software license, see the accompanying
4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
8 // Why base-58 instead of standard base-64 encoding?
9 // - Don't want 0OIl characters that look the same in some fonts and
10 // could be used to create visually identical looking account numbers.
11 // - A string with non-alphanumeric characters is not as easily accepted as an account number.
12 // - E-mail usually won't line-break if there's no punctuation to break at.
13 // - Double-clicking selects the whole number as one word if it's all alphanumeric.
15 #ifndef BITCOIN_BASE58_H
16 #define BITCOIN_BASE58_H
20 #include <openssl/crypto.h> // for OPENSSL_cleanse()
25 // Encode a byte sequence as a base58-encoded string
26 std::string EncodeBase58(const unsigned char* pbegin, const unsigned char* pend);
28 // Encode a byte vector as a base58-encoded string
29 std::string EncodeBase58(const std::vector<unsigned char>& vch);
31 // Decode a base58-encoded string psz into byte vector vchRet
32 // returns true if decoding is successful
33 bool DecodeBase58(const char* psz, std::vector<unsigned char>& vchRet);
35 // Decode a base58-encoded string str into byte vector vchRet
36 // returns true if decoding is successful
37 bool DecodeBase58(const std::string& str, std::vector<unsigned char>& vchRet);
39 // Encode a byte vector to a base58-encoded string, including checksum
40 std::string EncodeBase58Check(const std::vector<unsigned char>& vchIn);
42 // Decode a base58-encoded string psz that includes a checksum, into byte vector vchRet
43 // returns true if decoding is successful
44 bool DecodeBase58Check(const char* psz, std::vector<unsigned char>& vchRet);
46 // Decode a base58-encoded string str that includes a checksum, into byte vector vchRet
47 // returns true if decoding is successful
48 bool DecodeBase58Check(const std::string& str, std::vector<unsigned char>& vchRet);
50 /** Base class for all base58-encoded data */
55 unsigned char nVersion;
57 // the actually encoded data
58 std::vector<unsigned char> vchData;
63 void SetData(int nVersionIn, const void* pdata, size_t nSize);
64 void SetData(int nVersionIn, const unsigned char *pbegin, const unsigned char *pend);
67 bool SetString(const char* psz);
68 bool SetString(const std::string& str);
69 std::string ToString() const;
71 int CompareTo(const CBase58Data& b58) const;
72 bool operator==(const CBase58Data& b58) const { return CompareTo(b58) == 0; }
73 bool operator<=(const CBase58Data& b58) const { return CompareTo(b58) <= 0; }
74 bool operator>=(const CBase58Data& b58) const { return CompareTo(b58) >= 0; }
75 bool operator< (const CBase58Data& b58) const { return CompareTo(b58) < 0; }
76 bool operator> (const CBase58Data& b58) const { return CompareTo(b58) > 0; }
79 /** base58-encoded Bitcoin addresses.
80 * Public-key-hash-addresses have version 0 (or 111 testnet).
81 * The data vector contains RIPEMD160(SHA256(pubkey)), where pubkey is the serialized public key.
82 * Script-hash-addresses have version 5 (or 196 testnet).
83 * The data vector contains RIPEMD160(SHA256(cscript)), where cscript is the serialized redemption script.
85 class CBitcoinAddress;
86 class CBitcoinAddressVisitor : public boost::static_visitor<bool>
89 CBitcoinAddress *addr;
91 CBitcoinAddressVisitor(CBitcoinAddress *addrIn) : addr(addrIn) { }
92 bool operator()(const CKeyID &id) const;
93 bool operator()(const CScriptID &id) const;
94 bool operator()(const CNoDestination &no) const;
97 class CBitcoinAddress : public CBase58Data
104 PUBKEY_ADDRESS_TEST = 111,
105 SCRIPT_ADDRESS_TEST = 196,
108 bool Set(const CKeyID &id);
109 bool Set(const CScriptID &id);
110 bool Set(const CTxDestination &dest);
111 bool IsValid() const;
117 CBitcoinAddress(const CTxDestination &dest)
122 CBitcoinAddress(const std::string& strAddress)
124 SetString(strAddress);
127 CBitcoinAddress(const char* pszAddress)
129 SetString(pszAddress);
132 CTxDestination Get() const;
133 bool GetKeyID(CKeyID &keyID) const;
134 bool IsScript() const;
137 bool inline CBitcoinAddressVisitor::operator()(const CKeyID &id) const { return addr->Set(id); }
138 bool inline CBitcoinAddressVisitor::operator()(const CScriptID &id) const { return addr->Set(id); }
139 bool inline CBitcoinAddressVisitor::operator()(const CNoDestination &id) const { return false; }
141 /** A base58-encoded secret key */
142 class CBitcoinSecret : public CBase58Data
145 void SetSecret(const CSecret& vchSecret, bool fCompressed);
146 CSecret GetSecret(bool &fCompressedOut);
148 bool IsValid() const;
150 bool SetString(const char* pszSecret);
151 bool SetString(const std::string& strSecret);
153 CBitcoinSecret(const CSecret& vchSecret, bool fCompressed);